Soaking - What exactly can be removed?
I have soaked some cards to remove extra paper and pieces before and it worked very well. I am curious what else can be removed with the process. I know staining and ink do not come off but what about dirt? What about other unidentified stuff? Does "dabbing" with a q-tip or paper towel help? My questions surround the card below as its a beautiful Collins except this dirt on the back.
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